Tool mounting



Dec. 16 1 4- E. G. GARTIN TOOL MOUNTING Filed J ly 1920 Patented Dec. 16, 1924.

UNITED STATES 1,519,991 PATENT ornca.

ELMEB G. GARTIN, F GLAREMONT, NEW HAMPSHIRE, ASSIGNOB TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

TOOL MOUNTING.

Application filed July 6, 1920. Serial No. 394,319.

To all whom it may concern:

- Be it known that I, ELMER G. GARTIN, a citizen of the United States, residing at Claremont, in the county of Sullivan and State of New Hampshire, have invented certain new and useful Improvements in Tool Mountings, of which the following is a full, clear, andexact specification.

My invention relates to tool mountings and more especially to adjustable mountings for pneumatic too-ls adapted to rock drilling purposes.

An object of my invention is to provide an improved tool mounting. Another object of my invention is to provide an improved mounting for rock drilling devices. further object of my invention is-to provide an improved mounting for rock drilling devices which is readily adjustable to accommodate devices of different size. A still further object of my invention is to provide an improved mounting for rock drilling devices which will accommodate a plurality of difi'erent sizes of devices and by means of which the devices may be adjusted toward or from the work.

In the accompanying drawings I have shown for purposes of illustration, one emodiment which my invention may assume in practice.

In these drawings,

Fig. 1 is a view partially in elevation and partially in central longitudinal vertical section taken through the illustrative embodiment of my tool mounting showing a tool mounted therein.

Figs. 2 and 3 are. transverse sections, on

the lines 2-2 and 33, respectively, of Fig. 1, of the mounting.

For purposes of illustration I have disclosed the illustrative embodiment of my improved tool mounting in connection with a percussive motor 1 having a handle becured thereto and indicated by 2 and having a portion 3 formed. for cooperation with a suitable clamp. This rock drilling tool is mounted on a cradle 4 which is provided adj acent its opposite ends with slides 5 and 6 in which cross heads 7 and 8 are slidably mounted. The cross head 7 is provided with a clamp generally indicated by 9 secured thereto an comprising a fixed jaw 10 and a movable jaw 11 pivoted to the jaw 10 as at and a bolt 15, the bolt passing through both members of the clamp and the tool having the cylinder portion thereof clamped by the clamp members at the neighborhood of the portion 3 which is especially shaped for the purpose. The rear cross head 8 is provided with a socket 16 and a cover 17 therefor to receive the tool handle 2, the cover being pivotally mounted on a stud 18 and being adapted to be held in fixed position by means of a nut 19 and a second stud 20. For the gurpose of providing a slight flexibility an also for the purpose-of avoiding vibration, a shock absorbing spring 21 is secured to the cross head 8 by means of the A stud l8 and is also secured to theend of a mounting 22 formed integral with the cradle 4 by means of a second stud 23, washer 24, and nut 25. A suitable nut 26 of well known construction is secured to the cradle 4 and cooperates with a feed screw 27 mounted in a shell 28 in which the cradle as a whole is slidable. By reason of the slidable mountin of the cross head 7 in the guides 5, dril s of different lengths may obviously be employed in a single size of cradle and accordingly a device, capable of wide use, is produced in that but one model needs to be made for a plurality of different sizes of drilling implements.

From the foregoing description it will be seen that I have provided a simple, readily adjustable, universal tool mounting for use in connection with ordinary pneumatic tools of the hand type.

While I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in other forms without departingsaid clamping means may be varied to accommodate tools of different lengths.

3. A tool mounting comprisin a cradle member, longitudinally separate means carried thereby, one of which is adapted to grip a tool, and means whereby" the distance between said clamping means may be varied to accommodate unitary tools ofdifierent lengths.

.4. A tool mounting comprising a cradle member, longitudinally separated clamping means adapted to grip a tool carried thereby, and means whereb one of said clam ing means may be ad usted relative to t e other to accommodate unitary tools of different lengths. j

5. In a tool mounting, the combination comprising a cradle member, a tool support-' ed thereby and slidable'relative thereto, and a resilient shock absorbing connection between said cradle member and said tool.

6. A tool mounting comprising a cradle 1 member, longitudinally separated clamping means to grip the forward and rear ends of a tool carried thereby, and means whereby the forward clamping means maybe adjusted relative to the rear clamping means to accommodate unitary tools of different lengths.

7. A tool mounting comprising a cradle member, clamping means for a tool mounted thereon, slidable mountings for said clamping means, and a spring'extending between one of said mountings and a fixed part of said cradle.

8. In a tool mounting, the combination comprising a shell, a cradle slidably mounted therein, parallel guides on said cradle, a plurality of cross heads slidable in said guides and means for securing a tool to said cross heads. I

9. In 'a' tool mounting, the combination comprising a shell, a cradle slidably mounted therein, parallel ides on said cradle, a plurality of cross eads slidable in said guides, and means for securing a tool to said cross heads and for flexibly connecting one of said cross heads to the cradle- 10. A tool mounting comprising a shell,

a cradle member movable longitudinally thereof, means slidable in said cradle memher constituting tool clamping and supporting means, and means for resiliently connecting said slidable means and a tool carried thereby to said cradle member. I

11.-In a tool feeding mechanism, a movable carriage, means 'for moving the latter toward the-work, and means for attaching a hand portable fluid pressure rock drill to said carriage including a air of tool clampin devices each longitudinally movable relative to said carriage and means for' limiting the range of movement thereof. I

clamping cradle slidably. mounted thereon, means for feeding said cradle relative to said shell, guides formed in said cradle, crossheads slid-I ablmounted in said guides, and means carrie by said crossheads for clamping a unitary tool in operative position thereon.

14. A tool mounting comprising a shell, a cradle slidably mounted thereon, means to" feed said cradle relative to said shell, ides formed in said cradle, crossheads slidably mounted in said guides, means-carried .by said 'cr'ossheads for clamping a unitary per-. cussive tool in operative position thereon, and a resilient connection between one of said crossheads and said cradle.

' 15. A tool mounting comprising a tool, a cradle slidably mounted thereon, means for feeding said cradle-relative to said shell in-' eluding a feed nut carried by said cradle and a cooperating feed screw, ides formed in said cradle, crossheads'sli ably mounted in said guides, and-means carried by saidcrossheads forclamping a unitary percussive tool shock' absorbing connection disposed be-;

tween said cradle and one of said clamping members. p

17. A tool mounting comprisin a cradle member, longitudinal y separate slidable clamping means carried thereby adapted to clampfa'unita'ry tool in operative position thereon, and .means: whereby the distance between 'saidclamping. means may be varied to accommodate unitary tools 'Qfdifl'erent len hs.

18. A tool comprising a 'cradle member, longitudinally separated slidably mounted clamping means adapted to grip a unitary tool carriedthereby, andmeans whereby the distance between said clamping means may be varied.-

19. In a tool, mounting adapted to support a motor, the combination com rising a shell, a cradle slidably mounted t erein,

parallel guides on said cradle, a crosshead to receive said motor and slidable in said guides, and means for securing said motor inoperative relation to said crosshead.

In testimony whereof I afiix my signature.

. ELMER G. GARTIN. 

